Ion Beam Induced Crosslinking Reactions in Poly(di-n-hexylsilane)

Shu Seki, Kensaku Maeda, Yoshihisa Kunimi, Seiichi Tagawa, Yoichi Yoshida, Hisaaki Kudoh, Masaki Sugimoto, Yosuke Morita, Tadao Seguchi, Takeo Iwai, Hiromi Shibata, Keisuke Asai, Kenkichi Ishigure

Research output: Contribution to journalArticlepeer-review

49 Citations (Scopus)


Thin solid films of poly(di-n-hexylsilane) were irradiated with a variety of high-energy ion beams, electron beams, and 60Co γ-rays of which linear energy transfer (LET) ranges from 0.2 to 1620 eV/nm. The beams caused nonhomogeneous reactions of crosslinking and main chain scission in the films. The molecular weight of the polymer was traced to give the efficiency of crosslinking reactions: G(x) based on the Charlesby -Pinner relationship. The value of G(x) increases from 0.042 to 0.91 with increasing values of LET. We adopt a reaction model in a single ion track to the crosslinking reactions, and the expanding chemical track along an ion trajectory is responsible for the increasing crosslinking G values. The theoretical aspects of the energy distribution in the penumbra area give a good interpretation of the chemical track radii obtained in this study.

Original languageEnglish
Pages (from-to)3043-3048
Number of pages6
JournalJournal of Physical Chemistry B
Issue number15
Publication statusPublished - 1999 Apr 15
Externally publishedYes

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry


Dive into the research topics of 'Ion Beam Induced Crosslinking Reactions in Poly(di-n-hexylsilane)'. Together they form a unique fingerprint.

Cite this